Release Notes for OpenJPA


These notes describe the difference between OpenJPA release 1.0.0 and the preceding releases, 0.9.6 and 0.9.7. 1.0.0 is the first major release since OpenJPA graduated to an Apache top level project (TLP), and contains many new features and bugfixes.

OpenJPA is a feature-rich implementation of the persistence part of Java Community Process JSR-220 (Enterprise JavaBeans 3.0), which is known as the Java Persistence API (JPA). OpenJPA can be used as a stand-alone POJO persistence layer, or it can be integrated into any EJB3.0 compliant container and many lightweight frameworks. This release of OpenJPA is 100% compliant with the JPA specification.

Additional information on the OpenJPA project may be found at the project web site:


Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

The license may also be found in LICENSE.txt which is included in each release of OpenJPA.


OpenJPA requires Java 1.5 but will not compile with Java 6. For more detail please see


If you have questions about OpenJPA, a good source of information is the online product manual. You can find the manual for the current release as well as older releases of OpenJPA at

If you can't find what you're looking for in the manual or would like more clarification you please post to the OpenJPA development mailing list. Information on all of the OpenJPA mailing lists may be found here:

Getting Involved

The Apache OpenJPA project is being built by the open source community for the open source community - we welcome your input and contributions!

What we are looking for

How do I Contribute?

OpenJPA 0.9.7 Release Notes


The following bugs have been fixed for release 0.9.7
  • [OPENJPA-202] - after invoking LRS processing in a client by calling an @LRS annotated relationship, the next em.clear()/em.close() gets org.apache.openjpa.persistence.InvalidStateException: You cannot transfer large result set fields from one object or field to another
  • [OPENJPA-208] - NoResultException and NonUniqueResultException are not thrown when expected
  • [OPENJPA-214] - Need to support floating point primary keys
  • Improvements

    Improvements made for release 0.9.7

    New Features

    Features added for release 0.9.7


    Tasks done for release 0.9.7


    Additional testing done for release 0.9.7

    OpenJPA 1.0.0 Release Notes

    Bugs fixed



    New Feature